Indeed, given the earlier High Court decision on this question and the political landscape she faces, even prior to this unsuccessful appeal being heard, Theresa May had effectively conceded that Parliament would debate the issue anyway.

There is a potential problem for the hopes of Brexiteers here, but only if our MPs actually seek to stymie the Brexit vote rather than – much more likely – merely express trenchant views about it. The possibility of the House of Commons ignoring the result of a national referendum – which, as you will recall from the government leaflet mailed to your and every other home, was binding – is an ugly one.

That would create a terrible crisis; one that said that Parliament is willing to grant plebiscites only if the people vote as Parliament wishes, and that one can defy a popular referendum if wealthy and powerful enough to litigate against a result one doesn’t like.

But that won't happen. Parliament will vote to trigger Article 50 – whether out of respect for the electorate’s vote, or because of the whip system, or because many MPs sitting on seats with large majorities which voted to Leave decide to uphold the Brexit decision or at least abstain out of fear of their own electorates.

To be sure, that debate will feature high-flown rhetoric in which glowing tributes will be paid to the democratic principle of the House having its say (as both Houses already did when overwhelmingly voting through the referendum legislation). But the substance of it will not affect the path of Brexit.

In fact, the Supreme Court's decision means that Parliament will have to pass an Act which will act as the domestic legal basis for an Article 50 Brexit. As the absence of such an Act in our Parliament might have led to a challenge to Brexit later down the line, it is for the best that we have this Act and the outcome of the Supreme Court hearing therefore likely helps Brexit in the long term rather than hinders it.

Perhaps simply as a manifestation of wishful thinking among those opposed to executing Brexit, there has also been some speculation that a posse could ride to to the rescue of that undemocratic outcome in (suitably enough) the House of Lords. But Lord Deben (John Gummer as was) has indicated that the government's will shall not be opposed in the Upper House – and indeed, how terrible and how undemocratic it would be if, after a much demanded vote in the Commons, the government's agenda were stymied there.